fixed corruption of connection->log in log message when cleanup event is teared down way after the connection is dead
fixed corruption of connection->log in log message when cleanup event is teared down way after the connection is dead

gencer/nginx-upload-progress-module,gencer/nginx-upload-progress-module,perusio/nginx-upload-progress-module,Tiger66639/nginx-upload-progress-module,Tiger66639/nginx-upload-progress-module,masterzen/nginx-upload-progress-module,perusio/nginx-upload-progress-module,masterzen/nginx-upload-progress-module